Improvement in pumps



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SAMUEL BENSON, OFALLEGHENY CITY, PENNSYLVANIA.

Leners Patent Ne. 85,270, elated Deeembee 29, 186s. f

'MPROVEMENT IN' PULEPS.

The Schedule lre'fernadrto in these Letters Patent and making part of the same.

lTooll whom it ena/y concern Be it known that I, SAMUEL BENSON, of the city of Allegheny, in the county!` of Allegheny, and State of Pennsylvania, have invented a new and useful Im.l

provement in Pumps; and I do hereby declare the following to be a.' full, clear, and exact description thereof.

In pumping bilge-water from the barges, coal-boats, 8vo., used on our western rivers, a pump is usually employed, which consists of a box-like tube or pipe, tted with a common valve and hopper-shaped bucket, worked by a spring-pole, or other well-known device. The chief diculty connected with the construction of such pump is to provide a strong, e1icient, simple, and durable valve. l

My invention relates to an improvement-in this part ofthe pump; and the nature of it consists in the construction `of a metallic valve-box, which is fitted on to the lower end of the pump also, in the mode of fitting and attaching such box to the pump, and in the use, in connection therewith, of a apevalve, of India rubber, or other similar material.

To enable others skilled in the art to make and use my invention, I will proceed to`de'scribe its construction and manner of use, referring, for that purpose, to the accompanying drawings, making apart of this specification, inwhich* Figure 1 showsa pump and valve-devices, in vertical longitudinal section, and the bucket or sucker in side elevation;

Figure 2 is a perspective view of the valve-box; and

Figure 3 is a top or plan view of the valve-box, and shows the, gasket and ap-Valveswhich are interposed between it and to the lower end of the pump-box.

L ike letters of reference indicate like parts.

The pump-box a, I make of square shape, as is usually done.-

b is a sucker-rod, and

c is-.the ordinary hopper-shaped bucket.

The valve-box (l, I make of the required size, to t .snugly onto the lower end of the pump-box a, which may be bevelled off or shouldered for that purpose.

The bottom of this'box d is made with a grating, fl', or suitableapertures, c, are left for the admission of water, the bars d preventing the passage intoY the pump-box a of 'solid objects, so large .as to 'interfere with the proper operation of the bucket c.

The box (l has legs, d, which rest on the bottom of the boat, and between which the water flows into the pump through the grating d'.

To the lower end of the pump-box ce, and egtending entirely around it, I attach a gasket, i, of India rubber, or other suitable packing-material.

I also nail to the bottom of the pump-box a, iiap`f valves, o, also of India rubber, or other similar mate-T rial whichis not liable to warp.

- These Hap-valves o, when the valve-box d is attached,

rest on ythe top of the grating d', and, of course, open upward, when the bucket c is raised. To secure its ill and free operation,'I hollow out the lower end of the pump-boX-a as at af. l l

The valve-box d has bolt-holes, s, through which, and through holes bored up tlie sides of the pump-boi; a, any desirable distance, I pass the headed screwbolts m, and screw them into the nuts n, which are inserted iu mortses, properly cut in the pump-box (L for the purpose.

In this way, the valve-box d is held iirmly agalnst the lower end of the pump-box a, and as its sides enclose the lower end ofthe pump-box a, and the gasket t is compressed between the two, a good rm joint is secured. 4

-The novelty and utility of my improvement will be apparent from the following considerations:

First, the grating d prevents the ap-valves o from being injured.

Second, the valve-box d must'occasionally be removed, that the valves o maybe renewed. If attached by screws, the bite'of the screw-threads in the wood of the pump-box ais soon lost, and a new pump-box is required. By the use of the bolt m screwing into .nuts-n, I avoid this source ot' loss, since the valve-box a can be removed as often as may be necessary, without injury to any part of the pump. v

Third, the sides of the valve-box (l, enclosing the lower end of the pumpebox a, prevent the valve-box from being knocked off ordisplaced, which isan irnportant feature, in view of the rough usage to which, in the hands ofcoal-hoat men, such pumps are necessarily liable. y

Fourth, by the use of India-rubbervalves, o, instead of the leather valves ordinarily used, I save a: considerable amount of loss, since rubber is much less liable to displacement after being used in water for a conf siderable time.

What I claim my invention, and desire to secure by Letters Patent, is-

A valve-box d, resting against and enclosing the lower end of a bilge-water pump, such box having a grated bottom el', flap-valves o, of India rubber or other' like material, and being secured tothe pump-tube a byscrew-bolts m and nuts n, substantially as and for the purposes hereinbefore set forth. In testimony whereof, I, the s ad SAMUEL BENsoN,

Witnesses:

A. S. NICHOLSON, G. H. GHRIsTY. 

